Well can’t tell you what the proper way or what’s the automated way, I could tell you how I do it, don’t know if it’s correct or not.

So that being said, I do everything manually ;)

If you want to proceed that way, you could copy/paste the code I display in this article or from the source code of one of my app (https://github.com/fluster/fluster-app/tree/master/src/app/modals)